"It's in God's hands, and let it happen when it happens," the reality star told PEOPLE in the Swagg Mobile Application lounge at Saturday's Mercedes-Benz Polo Challenge in Bridgehampton, N.Y.
"I'm 26. It should happen naturally. I don't want to force it. I would love to have a baby, and if I get pregnant, I get pregnant." She adds with a laugh: "I don't think, like ... my biological clock is ticking!"
That laidback attitude might not be great news to Lamar Odom, who's made no secret of wanting a child with his wife sooner rather than later. But when it does happen, Kardashian says the NBA star will be a great father.
"He's already a great dad," she says. "He has two beautiful children [with ex-girlfriend Liza Morales] who he is an amazing father to ... But he definitely wants a baby right now."
Kardashian admits that seeing older sister Kourtney have a son, Mason, in December put everything in a different perspective. But even that didn't necessarily move up her own timetable.
"Being an aunt, I have the best of both worlds," Kardashian says. "I have him ... and give him [back] when I'm over it and need adult time."